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Finding the Fourth Proportional to 43,901.16, 65,866.52 and 13,920.29

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Solution

The fourth proportional to 43,901.16, 65,866.52 and 13,920.29 is: 20,885.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,901.16 : 65,866.52 = 13,920.29 : x
  2. Step 2: Convert to fraction form
    43,901.16/65,866.52 = 13,920.29/x
  3. Step 3: Cross multiply
    43,901.16x = 65,866.52 × 13,920.29
  4. Step 4: Simplify right side
    43,901.16x = 916,881,059.69
  5. Step 5: Solve for x
    x = 916,881,059.69/43,901.16
  6. Step 6: Final answer
    x = 20,885.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.